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	Provedor de dados ArchiMer (2) Autor De Vargas, Colomban (2) Ishitani, Yoshiyuki (2) Ujiie, Yurika (2) Asami, Takahiro (1) De Garidel-thoron, Thibault (1) Liu, Hui (1) Not, Fabrice (1) Takahashi, Kozo (1) Mais... Palavra-chave Longitudinal gradient (1) Ocean current (1) Phylogeography (1) Planktic foraminifer (1) Tipo do documento Text (2) Ano 2012 (2) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Phylogenetic Relationships and Evolutionary Patterns of the Order Collodaria (Radiolaria) ArchiMer Ishitani, Yoshiyuki; Ujiie, Yurika; De Vargas, Colomban; Not, Fabrice; Takahashi, Kozo. Collodaria are the only group of Radiolaria that has a colonial lifestyle. This group is potentially the most important plankton in the oligotrophic ocean because of its large biomass and the high primary productivity associated with the numerous symbionts inside a cell or colony. The evolution of Collodaria could thus be related to the changes in paleo-productivity that have affected organic carbon fixation in the oligotrophic ocean. However, the fossil record of Collodaria is insufficient to trace their abundance through geological time, because most collodarians do not have silicified shells. Recently, molecular phylogeny based on nuclear small sub-unit ribosomal DNA (SSU rDNA) confirmed Collodaria to be one of five orders of Radiolaria, though the... Tipo: Text Ano: 2012 URL: https://archimer.ifremer.fr/doc/00140/25108/23217.pdf Longitudinal differentiation among pelagic populations in a planktic foraminifer ArchiMer Ujiie, Yurika; Asami, Takahiro; De Garidel-thoron, Thibault; Liu, Hui; Ishitani, Yoshiyuki; De Vargas, Colomban. Evolutionary processes in marine plankton have been assumed to be dependent on the oceanic circulation system, which transports plankton between populations in marine surface waters. Gene flow facilitated by oceanic currents along longitudinal gradients may efficiently impede genetic differentiation of pelagic populations in the absence of confounding marine environmental effects. However, how responsible oceanic currents are for the geographic distribution and dispersal of plankton is poorly understood. We examined the phylogeography of the planktic foraminifer Pulleniatina obliquiloculata in the Indo-Pacific Warm Pool (IPWP) by using partial small subunit ribosomal DNA (SSU rDNA) sequences. We found longitudinal clines in the frequencies of three... Tipo: Text Palavras-chave: Longitudinal gradient; Ocean current; Phylogeography; Planktic foraminifer. Ano: 2012 URL: https://archimer.ifremer.fr/doc/00140/25109/23218.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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